@if $horizontal == true {
 @include media-breakpoint-up($sidebar-desktop-min-width) {

  .sidebar.sidebar-h {
    // will-change: unset;
    transition: none;

    min-height: auto;

    height: map-get($sidebar-common, 'horizontal-height');
    height: var(--sidebar-horizontal-height);

    width: 100%;

    .sidebar-inner {
        top: auto !important;
        bottom: auto !important;

        flex-direction: row;

        overflow: visible;
        height: inherit !important;
    }


    .ace-scroll {
        overflow: visible !important;
        width: auto;
        height: auto;
    }


    .nav {
        flex-direction: row;
        flex-wrap: nowrap;

        > .nav-item {
            width: auto;

            margin-bottom: 0 !important;            
            margin: 0 1px;

            position: relative;

            > .nav-link {
                width: auto;
                height: 100%;
                               
                padding-left: 0.75em;
                padding-right: 0.75em;

                position: relative;

                .nav-icon {
                    margin-right: 0.5em;
                    margin-left: 0.125em;
                }

                .nav-text {
                    flex-grow: 0;
                    margin-right: 0;

                    .badge {
                        float: none;
                    }
                }

                > .caret {
                    display: none;
                }
            }

            &.active > .nav-link {
                font-weight: $font-semibold;
            }
        }
   
        &.nav-link-rounded > .nav-item > .nav-link {
            border-radius: 0.25em 0.25em 0 0;
        }
    }

    
    .nav-fill {        
        width: 100%;

        &.text-center > .nav-item > .nav-link {
            justify-content: center;
        }

        .nav-item .nav-item {
            text-align: left;
        }
    }


    .nav-item-caption , .nav-item-divider {
        display: none;
    }    



    .nav > .nav-item {
        > .submenu {
            position: absolute !important;
            top: 100% !important;
            left: 0 !important;
    
            min-width: map-get($sidebar-common, 'width') - 1;
            min-width: calc(var(--sidebar-width) - 1rem);
    
            margin-left: 0;
            margin-top: map-get($sidebar-light-base, 'hoverable-submenu-margin'); 
        }

        &:hover > .submenu {
            margin-left: 0 !important;
            margin-top: map-get($sidebar-light-base, 'hoverable-submenu-hover-margin') !important;
        }
    }



    // the highlight border on 'hover'
    .nav > .nav-item > .nav-link::before {
        top: auto !important;
        bottom: 1px !important;

        left: 1px !important;
        right: 1px !important;

        border-width: $sidebar-h-active-border-width 0 0 0;
    }    
    .nav.active-on-right > .nav-item > .nav-link::before {
        bottom: auto !important;
        top: 1px !important;
        left: 0 !important;
        right: 0 !important;

        border-width: 0 0 $sidebar-h-active-border-width 0;
    }


    @if $sidebar-active-border == true {
        .nav.has-active-border {
            > .nav-item.active::before , > .nav-item.active > .nav-link::before {
                left: 0 !important;
                right: 0 !important;
                bottom: 1px !important;
                top: auto;

                border-width: $sidebar-h-active-border-width 0 0 0;
            }
        }
    }
    //if none-full height .nav
    .align-items-#{$sidebar-desktop-min-width}-end {
        .nav.active-on-right {
            > .nav-item.active::before , > .nav-item > .nav-link::before {
                top: 0 !important;
            }
        }
    }

    
    // smaller, compact highlight borders
    .nav.nav-active-sm > .nav-item > .nav-link::before, 
    .nav.nav-active-sm > .nav-item.active > .nav-link::before {
        left: 10% !important;
        right: 10% !important;
    }

    .nav.nav-spaced > .nav-item {
        margin-left: 0.5rem;
        margin-right: 0.5rem;

        > .nav-link {
            padding-left: 0.375rem;
            padding-right: 0.375rem;
        }
    }



    @if $sidebar-active-arrow == true {
        .nav.has-active-arrow > .nav-item.active > .nav-link::after {
            display: block !important;

            top: auto;
            bottom: -1px;
            right: auto;
            left: calc(50% - #{map-get($sidebar-common, 'arrow-size')});

            border-right: map-get($sidebar-common, 'arrow-size') solid transparent;
            border-left: map-get($sidebar-common, 'arrow-size') solid transparent;
            border-top-width: 0;
            border-bottom: map-get($sidebar-common, 'arrow-size') solid #fff;

            z-index: 1;
        }
        .nav.has-active-arrow .nav-item .nav-item.active > .nav-link::after {
            display: none !important;
        }
    }
    


    //sub arrow
    .nav > .nav-item > .sub-arrow , .sidebar-section-item.fadeable-below .sub-arrow {
        top: calc(100% - #{map-get($sidebar-common, 'arrow-size') * 2} + 1px);
        bottom: auto;
        left: 1rem !important;
        right: auto;

        margin-left: 0 !important;
        margin-top: map-get($sidebar-light-base, 'hoverable-submenu-margin');

        &::after, &::before {
            border: map-get($sidebar-common, 'arrow-size') solid;
            border-color: transparent;
            right: auto;
            border-right-color: transparent !important;//override other places
        }

        &::after {
            border-bottom-color: map-get($sidebar-light-base, 'hoverable-submenu-border');
            top: -1px;
            z-index: 0;
        }

        &::before {
            border-bottom-color: map-get($sidebar-light-base, 'hoverable-submenu-background');
            z-index: 1;
        }
    }

    .nav.has-active-arrow > .nav-item > .sub-arrow {
        left: calc(50% - #{map-get($sidebar-common, 'arrow-size')}) !important;
    }

    &:not(.sidebar-hover) .nav > .nav-item.open > .sub-arrow {
        display: block;
    }

    &.sidebar-hover .nav > .nav-item:hover > .sub-arrow {
        margin-top: map-get($sidebar-light-base, 'hoverable-submenu-hover-margin');
    }

    //////////

    .sidebar-section-item.fadeable-below .fadeable .sub-arrow {
        top: calc(#{map-get($sidebar-common, 'arrow-size') * -2} + 1px);
        margin-top: 0 !important;
    }
    .sidebar-section-item.fadeable-right .fadeable .sub-arrow {
        left: auto !important;
        right: 2rem;
    }

    //////////

    // show the last submenu on right (right aligned)
    .nav > .nav-item, .nav > .nav-item {
        &:last-of-type, &.submenu-right {
            > .submenu {
                left: auto !important;
                right: 0 !important;
            }
        }
    }
    // and update .sub-arrow position
    .nav:not(.has-active-arrow) > .nav-item {
        &:last-of-type , &.submenu-right {
            > .sub-arrow {
                left: auto !important;
                right: 2rem !important;
            }
        }
    }


    
    // sidebar sections positioning and display in horizontal menu
    .sidebar-section {
        width: auto;
        display: inline-flex;
        flex-direction: row;
    }

    .sidebar-section-item {
        .fadeable {
            animation: 1s navItemHidden;
            
            opacity: 0;
            visibility: hidden;
        }

        &.fadeable-below  .fadeable {
            top: 100% !important;
            left: 0 !important;

            margin-left: 0 !important;
            margin-top: map-get($sidebar-light-base, 'hoverable-submenu-margin');
        }

        &.fadeable-right .fadeable {
            left: auto !important;
            right: 0;
        }

        .fadeinable {
            opacity: 1 !important;
            visibility: visible !important;
            transition: none;
        }
        
        &:hover .fadeable {
            opacity: 1;
            visibility: visible;

            transition-delay: 0ms;

            margin-left: 0 !important;
            margin-top: map-get($sidebar-light-base, 'hoverable-submenu-hover-margin');
        }
        
        &:focus-within .fadeable {
            margin-top: map-get($sidebar-light-base, 'hoverable-submenu-hover-margin');
        }
    }


    .sidebar-section:first-child .sidebar-section-item.fadeable-center:not(:first-child),
    .sidebar-section:not(:first-child) .sidebar-section-item.fadeable-center {
        .fadeable {
            left: 50% !important;
            transform: translateX(-50%);

            .sub-arrow {
                left: calc(50% - #{map-get($sidebar-common, 'arrow-size')}) !important;
            }
        }
    }


  }//.sidebar.sidebar-h




  // collapsed horizontal sidebar
  .sidebar-h.collapsed-h {
    height: map-get($sidebar-common, 'horizontal-collapsed-height');
    height: var(--sidebar-horizontal-collapsed-height);

    .nav > .nav-item > .nav-link {
        > .nav-text {
            display: none;
        }
        > .nav-icon {
            margin: 0 map-get($sidebar-common, 'horizontal-collapsed-icon-margin');
        }
    }
  }



   // non-fixed navbar + fixed sidebar (sticky)
   //@supports(position: sticky) {
    .navbar:not(.navbar-fixed) {
        & ~ .sidebar-h.sidebar-fixed , & ~ .main-container .sidebar-h.sidebar-fixed {
            position: sticky;
            top: 0;
            .sidebar-inner {
                position: relative;
            }
        }
    }

    
    .main-container .sidebar-h.sidebar-fixed {
        position: sticky;
        top: 0;
        .sidebar-inner {
            position: relative;
        }
    }
    .navbar-fixed ~ .main-container , .main-container .navbar-fixed ~ {
        .sidebar-h.sidebar-fixed {
            top: map-get($navbar-common, 'height');
            top: var(--navbar-height);
        }
    }
    .navbar-fixed.navbar-sm ~ .main-container ,  .main-container .navbar-fixed.navbar-sm ~ {
        .sidebar-h.sidebar-fixed {
            top: map-get($navbar-common, 'sm-height');
            top: var(--navbar-sm-height);
        }
    }

    .sidebar-h.sidebar-fixed ~ .main-container .sidebar-fixed {
        .sidebar-inner {
            margin-top: map-get($sidebar-common, 'horizontal-height');
            margin-top: var(--sidebar-horizontal-height);
        }
    }
    .collapsed-h.sidebar-fixed ~ .main-container .sidebar-fixed {
        .sidebar-inner {
            margin-top: map-get($sidebar-common, 'horizontal-collapsed-height');
            margin-top: var(--sidebar-horizontal-collapsed-height);
        }
    }

  //}


 }//@media

  @media (min-width: 1600px) {
    .container .sidebar-h, .sidebar-h .container {
        .sidebar-section:first-child .sidebar-section-item.fadeable-center:first-child {
            .fadeable {
                left: 50% !important;
                transform: translateX(-50%);

                .sub-arrow {
                    left: calc(50% - #{map-get($sidebar-common, 'arrow-size')}) !important;
                }
            }
        }
    }
  }
  
  @media (min-width: 1750px) {
    .container-plus .sidebar-h, .sidebar-h .container-plus {
        .sidebar-section:first-child .sidebar-section-item.fadeable-center:first-child {
            .fadeable {
                left: 50% !important;
                transform: translateX(-50%);

                .sub-arrow {
                    left: calc(50% - #{map-get($sidebar-common, 'arrow-size')}) !important;
                }
            }
        }
    }
  }

  @include media-breakpoint-down($sidebar-mobile-max-width) {
      .sidebar-h {
        .nav.nav-fill .nav-item {
            flex: unset;
            text-align: left;
        }

        .container {
            height: 100%;
        }
      }
  }

}//@if horizontal